Waypoint's Director co-authored a report outlining the environmental considerations for overwater bungalows. Overwater bungalow resorts predominately feature in the Pacific, but could be appropriate as a niche tourism product in The Bahamas.
http://www.thenassauguardian.com/index.php?option=com_content&view=article&id=44043:overwater-structures-mitigating-environmental-concerns&catid=40:business&Itemid=2
http://www.thenassauguardian.com/index.php?option=com_content&view=article&id=44043:overwater-structures-mitigating-environmental-concerns&catid=40:business&Itemid=2